Before you buy a monitor arm, wall mount, or stand, one spec decides whether it will fit at all: the VESA pattern. It is a set of four threaded holes on the back of your monitor, and if the numbers do not match, the arm simply will not attach. This guide explains what VESA means, the common sizes, and what to do when your monitor has no VESA holes at all.
VESA in one paragraph
VESA is a standardized grid of four mounting holes on the back of a display, measured in millimeters horizontally by vertically. The most common desktop size is 100×100 mm, meaning the holes form a 100 mm square. Larger monitors and TVs often use 200×200 mm or bigger. Any arm listed as “VESA 100×100 compatible” will bolt to a monitor with that same pattern.
The common patterns
| VESA size | Typical display | Screw type |
|---|---|---|
| 75×75 mm | Small/older monitors, some 24″ | M4 |
| 100×100 mm | Most 24″–34″ monitors | M4 |
| 200×200 mm | Large 32″+ and small TVs | M6/M8 |
| 400×400 mm | Big TVs | M8 |
Many monitor arms include a plate with both 75×75 and 100×100 holes, so they cover the two most common desktop sizes out of the box. Always confirm the screw thread (M4 vs M6) because a mismatched bolt will not bite.
Weight rating: the other half of compatibility
A matching VESA pattern is necessary but not sufficient. The arm must also support your monitor’s weight. A gas-spring arm rated for 2–9 kg suits most 24–32 inch panels, but a heavy 34-inch ultrawide or a 38-inch curved display can exceed 9 kg and needs a heavy-duty arm. Check the panel weight without the stand, listed in the monitor’s spec sheet, and stay within the arm’s range for smooth, drift-free movement.
Curved and ultrawide notes
Wide and curved panels put more leverage on the arm, so a unit near its weight limit will sag or drift downward. For a 34-inch or larger ultrawide, pick an arm rated at least 2–3 kg above the panel weight and, ideally, one designed for wide displays.
What if my monitor has no VESA holes?
Some slim or design-focused monitors ship without VESA holes to keep the back clean. The fix is a VESA adapter bracket: a plate that clamps around the monitor’s neck or grips the bottom edge, giving you a standard 100×100 pattern to mount to. These cost $15–30 and work with most non-VESA displays, though they add a little bulk and you should verify the bracket is rated for your monitor’s size and weight.
FAQ
How do I find my monitor’s VESA size?
Check the spec sheet or manual, or measure the horizontal and vertical distance between the four holes center-to-center in millimeters. If they form a 100 mm square, you have VESA 100×100. Manufacturer support pages usually list it directly under “mounting.”
Can I mix VESA sizes with an adapter?
Yes. VESA step-up and step-down adapter plates convert, for example, a 75×75 monitor to fit a 100×100 arm, or a 100×100 monitor to a 200×200 mount. They are inexpensive and reliable as long as you stay within the arm’s weight rating and use the correct screws.
Do gaming laptops or all-in-one PCs support VESA?
Laptops do not have VESA holes, but you can mount them beside a monitor using a separate laptop-holder tray that attaches to a VESA arm. Some all-in-one PCs include a VESA pattern hidden behind a removable stand cover, letting you arm-mount the whole unit. Always confirm the weight, since an all-in-one is heavier than a bare monitor of the same size.
Bottom line
VESA compatibility comes down to two numbers: the hole pattern (usually 75×75 or 100×100 mm) and the arm’s weight rating. Match both and any arm or mount will fit. If your monitor lacks VESA holes, a $15–30 adapter bracket solves it. Confirm the pattern, the screw thread, and the weight before you buy, and installation becomes a five-minute job.
